public Resolution CalculateResize(decimal destinationAspectRatio, Resolution maxOutput, int framesizeMultipleOff = 1)
{
// get the aspect ratio for the height / width calculation, defaulting to 16:9
decimal displayAspect = destinationAspectRatio == 0 ? 16 / 9 : destinationAspectRatio;
// calculate new width
int width = maxOutput.Width;
int height = (int)(width * (1 / displayAspect));
if (height > maxOutput.Height) {
height = maxOutput.Height;
width = (int)(height * displayAspect);
}
// round
int newWidth = ((int)Math.Round(width * 1.0 / framesizeMultipleOff)) * framesizeMultipleOff;
int newHeight = ((int)Math.Round(height * 1.0 / framesizeMultipleOff)) * framesizeMultipleOff;
return new Resolution(newWidth, newHeight);
}
public Resolution CalculateResize(Resolution maxOutputSize, int framesizeMultipleOff = 1)
{
return CalculateResize(Width / Height, maxOutputSize, framesizeMultipleOff);
}
public static Resolution Calculate(decimal destinationAspectRatio, Resolution maxOutput, int framesizeMultipleOff = 1)
{
Resolution res = new Resolution(0, 0);
return res.CalculateResize(destinationAspectRatio, maxOutput, framesizeMultipleOff);
}